FujiFilm ClearView CS, Service Manual

Page: 1324 / 1404

CR-IR 363
Service Manual
PM-123
PM-123
011-202-08E
09.30.2009 FM5540
20. Checking the Image/Conveyance
{PM:21.}
1.
Check the image/conveyance.
{PM:3 _Checking the Image/Conveyance}
21. Checking the Laser Performance/
Sensitivity
21.1 Laser Performance
n
Objective
To establish that the IP reader and printer do not exhibit scan or print jitter.
n
Frequency
Semi-annually at routine PM or whenever the laser optics are serviced.
n
Required Test Equipment
One pair of 6 inch steel rulers
The largest CR mammography cassette and imaging plate, which size are used
clinically at this facility.
n
Procedure
1
. Using the CR mammography cassette selected above, erase the
enclosed IP using the “Secondary Erase” mode.
2.
Position the cassette for non-grid exposure, centered so the x-ray
beam covers the entire cassette front.
3.
Place the steel rulers on the cassette surface so the letter “T” is
formed. Place the top of the “T” approximately 1inch into the x-ray
field centered along the chest wall side of the cassette.
Expose and process the cassette under the same exposure conditions and image
processing menu used in the Sensitivity Conformation test.
n
Precautions and Caveats
Adjust exposure so that the contrast of the rulers versus background density creates
a bright white “T” against the background density. Edges of the formed "T" must be
smooth, free from burrs or defects.